JP4759052B2 - 高周波数再生が強化された補聴器および音声信号処理方法 - Google Patents
高周波数再生が強化された補聴器および音声信号処理方法 Download PDFInfo
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- JP4759052B2 JP4759052B2 JP2008517317A JP2008517317A JP4759052B2 JP 4759052 B2 JP4759052 B2 JP 4759052B2 JP 2008517317 A JP2008517317 A JP 2008517317A JP 2008517317 A JP2008517317 A JP 2008517317A JP 4759052 B2 JP4759052 B2 JP 4759052B2
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- 0 CCC(CC(*(*)[C@](C(*)C(CCCCCCCC=C)C(O)I)[Cn])N)[C@](CC)II Chemical compound CCC(CC(*(*)[C@](C(*)C(CCCCCCCC=C)C(O)I)[Cn])N)[C@](CC)II 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
- H04R25/353—Frequency, e.g. frequency shift or compression
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
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- Health & Medical Sciences (AREA)
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- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
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- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
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Description
Claims (14)
- 少なくとも1つの入力トランスデューサ(51),信号処理装置(53,54,55,56,57,58,59,60)および出力トランスデューサ(61)を備え,
上記信号処理装置は,
第1の周波数帯域(BPF1)が第2の周波数帯域(BPF2)よりも高い周波数の信号を持ち,かつ上記第1の周波数帯域(BPF1)が聴力閾値レベル(HTL)の範囲外となり,かつ上記第2の周波数帯域(BPF2)が上記聴力閾値レベル(HTL)の範囲内となるように,上記入力トランスデューサ(51)からの信号を第1の周波数帯域(BPF1)と第2の周波数帯域(BPF2)とに分割する手段(53),
上記第1の周波数帯域(BPF1)の信号(BSS)を低周波数側にシフトして上記第2の周波数帯域(BPF2)の周波数範囲内に収まる信号(BL-LSB)を形成する手段(1),
上記第2の周波数帯域(BPF2)に上記周波数シフト信号(BL-LSB)を重畳して和信号を生成する手段(59),および
上記和信号を上記出力トランスデューサ(61)に与える手段(60)を備えた補聴器であって,
上記信号をシフトする手段(1)は,
上記第1の周波数帯域(BPF1)における最高音圧レベルを有する信号の周波数を表す主周波数(NFF)を検出可能な少なくとも1つの周波数検出器(2),
上記周波数検出器(2)によって制御され,所定値によって上記主周波数(NFF)を分周することによって発振器周波数(CGF)が規定される少なくとも1つの発振器(3),および
上記第1の周波数帯域(BPF1)からの信号(BSS)を上記発振器(3)からの発振器周波数(CGF)に乗じることで,上記第1の周波数帯域(BPF1)の信号(BSS)を上記発振器周波数(CGF)だけ低周波側にシフトさせて,上記第2の周波数帯域(BPF2)内に収まる周波数シフト信号(BL-LSB)を生成する手段(4)を備えたことを特徴とする,
補聴器(50)。 - 上記和信号を出力トランスデューサ(61)に与える手段は,補聴器ユーザの聴力不足を補償するように上記和信号を調整するために適合された出力段(60)を備えている,
請求項1に記載の補聴器。 - 上記第2の周波数帯域(BPF2)を圧縮する第1の圧縮器(54),および上記第1の周波数帯域(BPF1)の上記周波数シフト信号(BL-LSB)を圧縮する第2の圧縮器(56)を備えている,
請求項1に記載の補聴器。 - 上記入力トランスデューサ(51)からの信号を少なくとも第1,第2および第3の別々の周波数帯域に分割する手段(52)を備え,
上記周波数シフト手段(55,57)は,それぞれの周波数によって,上記第1および第2の周波数帯域を個々に周波数シフトするように適合されており,
上記第1および第2の周波数帯域の周波数シフト・バージョンのそれぞれを,上記第3の周波数帯域に重畳することにより,和信号を生成する手段(59)を備えている,
請求項1に記載の補聴器。 - 主周波数(NFF)を識別する手段(2)はノッチフィルタ(15)を備えている,
請求項1に記載の補聴器。 - 上記発振器(3)はコサイン発振器である,請求項1に記載の補聴器。
- 入力信号(BSS)を得,
第1の周波数帯域(BPF1)が第2の周波数帯域(BPF2)よりも高い周波数の信号を持ち,かつ上記第1の周波数帯域(BPF1)が聴力閾値レベル(HTL)の範囲外となり,かつ上記第2の周波数帯域(BPF2)が上記聴力閾値レベル(HTL)の範囲内となるように,上記入力信号(BSS)を第1の周波数帯域(BPF1)と第2の周波数帯域(BPF2)とに分割し,
上記第1の周波数帯域(BPF1)の信号の周波数をシフトして,上記第2の周波数帯域(BPF2)の周波数範囲内に収まる周波数シフト信号(BL-LSB)を生成し,
上記第2の周波数帯域(BPF2)に上記周波数シフト信号(BL-LSB)を重畳して和信号を生成し,
上記和信号を出力トランスデューサ(61)に与える,補聴器(1)における信号を処理する方法であって,
上記第1の周波数帯域(BPF1)の周波数シフトのステップは,
第1の周波数帯域(BPF1)における最高音圧レベルを有する信号の周波数を表す主周波数(NFF)を決定し,
上記主周波数(NFF)を所定値によって分周することによって規定される発振器周波数(CGF)において発振器(3)を駆動し,
上記第1の周波数帯域(BPF1)からの信号を上記発振器(3)からの発振器周波数(CGF)に乗じて,上記第1の周波数帯域(BPF1)の信号(BSS)を上記発振器周波数(CGF)だけ低周波側にシフトさせた上記周波数シフト信号(BL-LSB)を生成し,
上記周波数シフト信号(BL-LSB)を上記第2の周波数帯域(BPF2)からの信号(HLS)に加算することを特徴とする,方法。 - 上記出力トランスデューサ(61)に与えるべき上記和信号を調整して,補聴器ユーザの聴力不足を補償する,請求項7に記載の方法。
- 第1の圧縮器(56)において上記第1の周波数帯域(BPF1)の信号を圧縮し,第2の圧縮器(54)において上記周波数シフト信号(BL-LSB)を圧縮する,請求項7に記載の方法。
- 上記第1の周波数帯域(BPF1)の主周波数(NFF)を識別し,上記周波数帯域の外側の信号を抑制し,シフトのための上記主周波数(NFF)についての周波数帯域を選択する,請求項7に記載の方法。
- 上記第1の周波数帯域(BPF1)の帯域幅よりも小さい帯域幅を上記第2の周波数帯域(BPF2)として選択する,請求項7に記載の方法。
- 上記第1の周波数帯域(BPF1)の帯域幅の何分の一の帯域幅を上記第2の周波数帯域(BPF2)として選択する,請求項7に記載の方法。
- 聴覚障害を持つ補聴器(50)のユーザが知覚可能な帯域幅を上記第2の周波数帯域(BPF2)として選択する,請求項7に記載の方法。
- 上記主周波数(NFF)の何分の一として計算されるオフセット周波数(CGF)によって,上記第1の周波数帯域(BPF1)を周波数シフトする,請求項7に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/DK2005/000433 WO2007000161A1 (en) | 2005-06-27 | 2005-06-27 | Hearing aid with enhanced high frequency reproduction and method for processing an audio signal |
Publications (2)
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JP2008544660A JP2008544660A (ja) | 2008-12-04 |
JP4759052B2 true JP4759052B2 (ja) | 2011-08-31 |
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JP2008517317A Active JP4759052B2 (ja) | 2005-06-27 | 2005-06-27 | 高周波数再生が強化された補聴器および音声信号処理方法 |
Country Status (10)
Country | Link |
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US (1) | US8031892B2 (ja) |
EP (1) | EP1920632B1 (ja) |
JP (1) | JP4759052B2 (ja) |
CN (1) | CN101208991B (ja) |
AT (1) | ATE449512T1 (ja) |
AU (1) | AU2005333866B2 (ja) |
CA (1) | CA2611947C (ja) |
DE (1) | DE602005017831D1 (ja) |
DK (1) | DK1920632T3 (ja) |
WO (1) | WO2007000161A1 (ja) |
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2005
- 2005-06-27 DK DK05753586.6T patent/DK1920632T3/da active
- 2005-06-27 EP EP05753586A patent/EP1920632B1/en active Active
- 2005-06-27 WO PCT/DK2005/000433 patent/WO2007000161A1/en active Application Filing
- 2005-06-27 CN CN2005800502736A patent/CN101208991B/zh active Active
- 2005-06-27 AU AU2005333866A patent/AU2005333866B2/en not_active Ceased
- 2005-06-27 AT AT05753586T patent/ATE449512T1/de not_active IP Right Cessation
- 2005-06-27 DE DE602005017831T patent/DE602005017831D1/de active Active
- 2005-06-27 JP JP2008517317A patent/JP4759052B2/ja active Active
- 2005-06-27 CA CA2611947A patent/CA2611947C/en active Active
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2007
- 2007-12-19 US US11/960,694 patent/US8031892B2/en active Active
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JPS5359292A (en) * | 1976-11-09 | 1978-05-27 | Kunihide Yoshioka | Hearing aid |
JPS5755700A (en) * | 1980-09-20 | 1982-04-02 | Shigeru Egashira | Frequency-compression hearing aid |
EP0054450B1 (fr) * | 1980-11-28 | 1984-07-04 | Jean-Claude Lafon | Perfectionnements aux dispositifs de prothèse auditive |
JPS62262600A (ja) * | 1986-05-09 | 1987-11-14 | Eastern Electric Kk | 補聴装置 |
JPH05316597A (ja) * | 1992-05-06 | 1993-11-26 | Sony Corp | 補聴器 |
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Publication number | Publication date |
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EP1920632B1 (en) | 2009-11-18 |
US20080123886A1 (en) | 2008-05-29 |
US8031892B2 (en) | 2011-10-04 |
CA2611947A1 (en) | 2007-01-04 |
CN101208991A (zh) | 2008-06-25 |
JP2008544660A (ja) | 2008-12-04 |
AU2005333866B2 (en) | 2009-04-23 |
DE602005017831D1 (de) | 2009-12-31 |
WO2007000161A1 (en) | 2007-01-04 |
EP1920632A1 (en) | 2008-05-14 |
DK1920632T3 (da) | 2010-03-08 |
CN101208991B (zh) | 2012-01-11 |
CA2611947C (en) | 2011-11-01 |
AU2005333866A1 (en) | 2007-01-04 |
ATE449512T1 (de) | 2009-12-15 |
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